public class Main{
	public static void main(String[] args){
		for(int i=0;i<10;i++){
			int n=(int)(Math.random()*10)%2;

			switch(n){
				case 0:
					doRequest(new HallowRequest("baboo"));
					break;
				case 1:
					doRequest(new WelcomeRequest("wanwan"));
					break;
			}
		}

	}

	public static void doRequest(IRequest request){

		request.execute();
	}
}